Reference

Organic isocyanate polymers

Organic isocyanate polymers. Nagahisa, Seiji; Tajima, Yoshiyuki; Kawabata, Toshihiko (Mitsui Toatsu Chemicals, Inc., Japan). Japan. Kokai JP 52014692 3 Feb 1977 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08G018-02. APPLICATION: JP 75-90062 25 Jul 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) P-toluenesulfonic acid (I) [104-15-4], its Me ester [80-48-8], BzCl [98-88-4], or phthaloyl chloride [88-95-9] was used as a stabilizer for poly(toluene diisocyanate) (II) [9017-01-0] or a TDI copolymer contg. isocyanurate moieties. I prevented the formation of addnl. isocyanurate structures at room temp. Thus, a mixt. of TDI 100, Bu2Sn dilaurate 0. 80-48-8 and 9017-01-0 are also in the experiment.1, and Me2SO 10 parts was heated at 80.degree. for 5 h and mixed with 5 parts I to give a II compn. which remained as a liq. after 20 days, compared with a solid for II contg. no I. .

Bleaching or cleaning compositions

Bleaching or cleaning compositions. McCrudden, Joseph Edmund (Interox Chemicals Ltd., Engl.). Ger. Offen. DE 2652423 26 May 1977, 15 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C11D003-39. PRIORITY: GB 75-47371 18 Nov 1975. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and Detergents) Stable mixts. of phthaloyl peroxide (I) [37051-42-6] and a desensitizing agent were prepd. and used as bleaching agents in the laundering of textiles. Thus, NaH2PO4 15, Na2HPO4 15, and Na peroxide 8.3 g were dissolved in 400 mL ice water, treated with a cool soln. of 14.1 mL phthaloyl chloride [88-95-9] in 300 mL CHCl3, and stirred for 17 min. The org. phase was sepd., concd. to 50 mL, mixed with 5 g lauric acid in 40 mL CHCl3, and evapd. to give a I-contg. solid contg. 2.1% active O. The I-contg. solid was superior to Na perborate in the bleaching of cotton or cotton-polyester fabrics.